My limited understanding is that a gastric band is designed to stimulate the feeling of fullness after much smaller meals, ie. a mechanical alternative to simply reducing calories consumed.
I understand access to your normal exercise channels is currently suspended, but as I always find you to be one of the more balanced here at pfm, I wonder if an alternative program / course to strengthen will power in resisting the urge to eat more might be worth exploring ?
I do have a crackpot theory that the more you weigh, the harder it is to resist the urge to eat more. Almost everyone who keeps to a strict diet is relatively slim, so the theory is that the urge to eat is directly proportional to the amount of cells in your body, ie. far harder for you at 18 stone than me at 12 stone. Hence greater will power required .... and of course assuming a sensible diet (I’m pescatarian, but since getting the vegan content up to about 90+%, ie. almost completely eliminating dairy, I find I no longer have to make any effort to keep my weight balanced, whereas before it required constant vigilance).